Asymmetric fins and toe in aren't the be all and end all of wavesailing -for most people it's not that important. We do 3 ranges of symmetrical front fins and only one range of asymmetrical which reflects this.
I still think it's interesting to see how...

We had a think about how we could improve the humble US fin bolt, both in terms of performance and cost, and this is what we came up with..
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The screws are A4 stainless steal, the plates are a brass insert moulded into tough Nylon....